103H7821-0444
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The 103H7821-0444 from Sanyo Denki is part of their StepSyn Stepping Motors series, featuring a step angle of 1.8° per step and a compact motor length of 44.8 mm. It offers a holding torque of 0.78 Nm and a rated current of 2 A/phase. This bipolar motor, weighing 0.6 kg, is NEMA23 dimensionally compatible for seamless mounting.
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Product Description:
The 103H7821-0444 stepper motor from Sanyo Denki is a compact and efficient motion control device designed for precision driven applications. The motor is built as part of the trusted StepSyn Stepping Motors series it is tailored for industries that require fine positioning and stable operation. The common usage of this motor includes robotics and small automation setups.
The 103H7821-0444 stepper motor features a 60 mm square frame with a motor length of 44.8 mm which supports compact installation. It delivers a holding torque of 0.78 Nm minimum during 2 phase energization that allows dependable torque output in start stop conditions. The motor operates at a rated current of 2 A per phase which ensures power efficiency and controlled heating during continuous operation. Its rotor inertia is 0.275 × 10⁻⁴ kg·m² which provides smooth acceleration and deceleration. The bipolar winding type paired with 1.5 Ω/phase resistance and 2 mH/phase inductance ensures responsive motion and step precision. The 103H7821-0444 stepper motor is built to meet NEMA23 compatibility with a 47.14 mm mounting pitch that allows seamless replacement or integration into existing motion systems. The connector-type connection increases system compatibility while the standard cable supports secure interfacing with driver units.
The 103H7821-0444 stepper motor operates on the principle of discrete step motion using a 1.8° step angle. Each input pulse results in a fixed angular displacement which enables repeatable positioning without the need for feedback systems. The shaft runout is limited to 0.025 mm which ensures minimal deviation during operation. It is suitable for environments classified under a defined pollution degree that supports reliable use in controlled industrial settings which ensures stable precise movement in demanding and space limited applications.
Frequently Asked Questions about 103H7821-0444:
Q: How does the 1.5 Ω/phase resistance help in 103H7821-0444?
A: It improves energy efficiency and reduces heat generation during extended runtime.
Q: Why is bipolar winding used in this motor?
A: Bipolar windings deliver better torque and smoother motion at low speeds.
Q: How does the 0.275 × 10⁻⁴ kg·m² inertia affect performance?
A: It supports quick start-stop response and accurate position control.
Q: What’s the benefit of 1.8° step angle in 103H7821-0444?
A: It offers fine resolution for precise incremental movement.
Q: Why is the 47.14 mm mounting pitch useful?
A: It ensures compatibility with NEMA23-standard frames and easy integration.
